Type-writing machine.



No. 647,804. Patented Apr.' |7, I900.

- E. H. BYER.

TYPE WRITING-MACHINE.

(Application filed Sept. 29, 1899.)

(No Model.) -2 Sheets-Sheet 5W0 oz No. 647,804. Patented Apr. I7, 1900.

E. H. BYER. TYPE WRITING MACHINE.

(Application filed Sept. 29, 1899.) (No Model.)

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UNITED STATES PATENT OFFICE.

EDGAR HOIVARD BYER, OF HARRISBURG, PENNSYLVANIA, ASSIGNOR TO WILLIAM P. QUENTELL, OF SAME PLACE.

TYPE-WRITING MACHINE.

SPECIFICATION rermiag part of Letters Patent No. 647,804; dated April 17, 1900. Application filed September 29, 1899. Serial No 732,081. (No model.

To all whom it incl/y conceive:

Be it known that I, EDGAR HOWARD Even,

a citizen of the United States, residing at Har- 1 risburg, in the county of Dauphin and State .of Pennsylvania; have invented certain new and useful Improvements in Type-Writing Machines, of which the following is a specification.

My invention relates to type-writing machines, and has for its objects to provide a machine that will give a very fine alinementand be capable of a powerful printing blow and therefore particularly adapted for mimeograph and duplicating work, to make a machine of this character of very simple and inexpensive construction with parts that do not require as great accuracy in manufacture or as fine adjustment as the ordinary machine, to afford a direct and positive operating connection between the spacing, printing, and positioning mechanisms and their controlling device and between the controlling device and the actuating-key lever, and to provide means to give a sharp positive stroke and return to the printing-hammer, whereby clean unblurred printing is insured.

My invention has relation to that class of machines in which a rotatable type-wheel or type-segment and a vibratory impression device, such as a rocking hammer, effect the printing. It also relates to those machines in which two sets of keys are employed, one for predetermining the printing position of the type-wheel and the other for operating the positioning, spacing, and impression mechanisms.

The invention consists, generally stated, in keys which indicate the letters to be printed and serve as stops for the rotatable typewheel to fix the printing position thereof; another set of keys which serve to rotate the type-wheel to printingposition, to space, and to impel the hammer or equivalent impression device against the type; an operating rocker or equivalent mechanism comprising a bail and a pivoted link and having connections with the positioning, printing, and spacing mechanisms 3 means of direct engagement between the actuating-lever and the rocker, and a stop for the bail of the rocker to give a sudden jerk and rebound to the impressidh device at the end of its printing-stroke.

In the accompanying drawings, which illustratethe invention and in which like figures of reference denote the same parts throughout the different views, Figure l is a plan view of a machine embodying my improvements; Fig. 2, a side elevation, partly in sectiongand Fig. 3, a detail plan of a modified construction of mounting the rocker-link.

Referring to the drawings, 1 is the base of the machine, Figs. 1 and 2, provided with a track 2 for a paper-carriage 3. The feeding mechanism of the carriage, comprising a rack at and dog 5 and suitable impelling means, is known and need not be described in detail. The dog 5 has its rock-shaft or fulcrum at 6 and is moved or held to one position by arm 7 and spring 8, secured to a fixed post or block 9. The dog is rocked against the tension of spring 8 by means hereinafter described.

The keyboard 10 at the front of the machine consists of two fixed plates 11 and 12. In suitable slots in these plates are mounted the stems of keys 13, supported and held normally in raised position by spiral springs 14. These keys are provided with characters corresponding in position to those of the typewheel and are preferably arranged in arcs of concentric circles. These keys serve merely as index-keys to indicate the characters to be printed and to contact with an arm carried by the type-wheel to stop the wheel at the desired type character. In front of the indexkeys 13 are actuating-keys 15, so located as to permit them to be depressed by the part of the hand adjoining the wrist when one of the index-keys is pressed down bya finger of the same hand. Each actuating-key is mounted on a main lever 16, pivoted by means of an arm 17 between cones or other suitable bearings 18. A horizontal pin or arm 19 on lever 16 extends inwardly over a link or lever20, fnlcrumed at its rear end to the forward end of an arm of a bail 21, which is mounted on a rocking shaft 22, journaled in the frame. The bail and link constitute a rocker which actuates the positioning, printing, and spacing mechanisms, as hereinafter described.

The free end of lever rests on apin or lug V 23, projecting laterally from an arm 2i of, a

rocking driver-lever 25, jour naled at 26 in the frame. r

An uprightarm 27 of the driver-lever has its upper end extending between an arm28 and bracket 29 of a sleeve 30, fixed to a vertical shaft-'31. The shaft is rotatablein its bearings and carries atits upper part a type wheel or type-segment 32, splined to the shaft or otherwise secured thereto, so as to be rotatable with the same, but free to move Ion-i gitudinally thereon. From the bracket 29 ere tends a right-angled arm I 33, which engages spokes 34 of'the type-wheel. is made in two and strength. I

The type-wheel 'A stop arm 35 is secured to shaft 31 ex? tends horizontally forward under thestems of theindex-keys 13, so as to strike against a depressed stem when the type-wheel shaft e To the end of arm 27 0f the is rotated. H V I I L driver-lever is secured a return-spring 36, which tends to normally hold arm 24 tilted upward and ar 27 away from bracket 29.

Each sidearm of bail 21 rests over and is adapted tositrike against the arm orro'd 37fv of 2 T, a printing-hammer 38, pivoted'at 39 to the 3 fru alme. The hammer extends opposite the face of the type and when actuatedforces the paper fed from the rollers- 40 and back of new lt i' sh n Ope ng 2in d plat and against a ribbon which travels b t the a snd ype-wheel. a i To the rear end of arm of bai12l is secured a rm 3, whi is ro by and with sai bail, The arm 43 is connected to thepivoted dog 5.

o bail 21; in sueh relation'to the bail and ham-;

A baror block 45 is placed below the met that thefbailwill'strike the stop just fore the end the stroke of the hammer.

Th fl ms e s i al y s ng bac away from the typeand lift-the bail, and in order tQlift and return the actuating-lever 16' areturn-fspri lg M is secured to the. rear end thereof'and normally holds the pivotedehd d w' l nd ey nd p- 1 Fig.3 shows a modified eonstructionof mounting the link or. lever 20. It is fulerumed to arm 24 of driver-lever 25, at a right angle thereto, and, its free. endextends over and is adapted to actuate bail21. The bail 1 and link, though not fulcrumed together in this instance, still constitute in functionja sing e oc e device o actuat nsth -posi- Ho l e-spr t n an pac ng mechan sms.

The operation of the machine is as follows: To print a certain character,one ofi theindexkeys13 isdepressed by a finger, andthe fby 11. Pe fif he hand a j i ing the-wrist he.

ac uat ng-k y 1 th am ide 0fthe k y,-

. board is's ru kvThe a n ever lfi isthns depresses, nsi'b' an o p nipr ssesdown e e er h ch in n ocks; the

ypewhee driverve Th resistance o return-spring 36 and the inertia of the typesections to obtain lightness wheelcombined areless than that of the dogrcontrolling spring 8 and carriage-spring,

which latter may be of any ordinary form,

and hence the pressure transmitted from main lever 16 to link 20 will cause the driver-lever 25, to move down before the bail 21 is rocked. The rocking driver-lever will rotate the typewheel by striking against bracket 29 until the stop-arm 35 strikes the stem of the depressed index-key, whereupon the type character corresponding tothe key will be presented and'held in correct printing position;

Further movement of itypefwheel and driverlever 35 being impossible, the continued pressure-from the main actuating-lever on link 20 will then cause the bail 21.to move down and strike the arm 37, and thereby rock the hammer 38, which will be. impelled to the typewheel. The bailwill strik'ethe stop-piece 45 just before the end of the-swing of the hammer, and will thus be given a suddenpositive stop, which will impart a sudden jerk to the hammer at the-end of its movement, thereby causing it to fly against the paper and type with sharp .clean rst'roke and immediately I rebound, so. that the type-wheel in its return rotation willnot-drag against the end of the hammer and smear theimprint on the paper.

,At'the same time that the hammer is rocked the arm 43 of thebail willtiltthe dog 5 away from the carriage-rack andpermit the car- .riagetobe moved-one space,

Any suitable forms; otspacingv mechanism, spacing-key, type-wheel-shiftin g mechanism,

and inking mechanism may be employed in connection with nay-improved machine; but as the details of such mechanism form no part'ofi my invention they are "not herein set Out. I I

The rocker, comprising the pivoted bail and 'link and its combinations with the index stop-keys, which do. no actuating of working parts, and with the main actuating-keys and with other cooperative parts, constitute the novelefea-tures of my invention, and other parts got; the machine herein described and shownaliesetforth to present a complete and operative device.

Having thus described myinvention, what tion with a rotatable; type-wheel, a rocker, a

key-lever for'aetuatingsa'id rocker, a positionngmechanism forsaid wheel, impression and spacing mechanisms of greater resistance than said positioning mechanism, said rocker having means to, engage and operate said po sitioning, impression and spacing mechanisms, whereby said positioning mechanism will be operated before the impression and spacing mechanisms, substantially as described.

3. In a type-writing machine, in combination with a rotatable type-wheel, a stop-arm connected to and moving with said Wheel, index or character keys having stems depressible into the path of the-stop-arm, mechanism to rotate said Wheel, a rocking link engaging said mechanism, a lever to rock said link, and a key on said lever, substantially as described.

4. In a type-writing machine, in combination with the rotatable type-wheel and its stoparm, the index or character keys and their stems, a rocking bail, mechanism to. rotate said wheel, a link connecting said bail and wheel rotating mechanism, a spacing mechanism, a hammer, means to operate said spacing mechanism and hammer by the bail, and a main lever, said lever provided with means to actuate the bail and link, substantially as described.

5. In a type-writing machine, in combination with the rotatable type-wheel and its stoparm, the index-keys and their stems for alone predetermining the printing position of the wheel, the actuating-keys and their levers, the positioning mechanism, the hammer, a rocking bail for actuating the hammer, a link for actuating the positioning mechanism, substantially as described.

6. In a type-writing machine, in combination with a rotatable type-wheel, a pivoted driver-lever therefor, a rocking lever for operating said driver-lever, an actuating-lever, impression and spacing mechanisms and means to operate said mechanisms by the rocking of the rock-lever, substantially as described.

7. In a type-writing machine, in combination with a rotatable shaft, a type-wheel and stop-arm carriedby said shaft, index-keys, said keys having stems depressible into the path of the stop-arm, a rocking driver-lever for said type-wheel, a spacing mechanism, a

bail, a link fulcrumed thereto, and an im pression device and means to positively impel said impression device by said bail, and means to rock said link, substantially as described.

9. In a type-writing machine, in combination with a rocking printing-hammer, an impelling-bail which strikes the hammer, a keylever for actuating said bail, and a stop for arresting said bail short of the end'of the hammer-stroke, substantially as described.

10. In a type-writing machine, in combination with a rotatable type-wheel, a rocking bail, a rocking hammer actuated by said bail, a link fulcrumed on said bail, mechanism to revolve said wheel, said link connected with said mechanism, a main lever for rocking said link, and a stop to arrest the bail short of the end of the hammer-stroke, described.

11. (In a type-writing machine, in combination with th e rotatable type-wheel and its stoparm, the in dex-keys and their stems for alone predetermining the printing position of the wheel, the actuating-keys and their levers, the positioning mechanism, the hammer, a rocking bail for actuating the hammer, a link for actuating the positioning mechanism, and a stop to arrest the bail short of the end of, the hammer-stroke, substantially as described.

In testimony whereof I hereunto aflix my signature in the presence of two witnesses EDGAR HOlVARD BYER.

Witnesses:

EUGENE SNYDER, W. H. BYERLY.

substantially as 

